I have set-up a test version of my web site in the XAMPP environment at C:/xampp/htdocs/mysite/. All .htm* pages, images, etc. work in all directiories and sub-directories except. *.php pages.
Any pages ending in .php only open in a browser if they are in the first level of the directory structure ie: C:/xampp/htdocs/mysite/.
A page such as http://127.0.0.1/mysite/index.php or http://localhost/mysite/index.php will open fine.
A page such as http://127.0.0.1/mysite/level2/index.php or http://localhost/mysite/level2/index.php will not open, instead IE7 and Firefox offer me a pop-up and try to download these files.
This site works correctly at my on-line host, so I'm suspecting this is a configuration problem with XAMPP or PHP, but I am not sure how to correct it. I would appreciate a suggestion. Thank you!